Ron's RCA T7-5 Electronic Rescue
Posts: 4,950
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA
If you want to know how to work with those forked tube socket terminals it is actually not that hard. The secret is to use a solder sucker, which I do anyhow even in sets without the forked terminals, heat up the terminal, place the solder sucker on it once it's molten, then let go of the bulb or trigger. Sometimes you have to use it more then once, and that takes care of 90% of the old solder on the terminal. Then what you do is use a sharp, flat bladed, jeweler's screwdriver, a small one, to spread the fingers apart, sometimes heating up the joint again whilst you are at it, and the old component leads and wires will lift right out, replace in reverse order. I've worked on a lot of Canadian RCA and G.E sets from the late 1930s and early 40s, and they used the same forked terminals on the tube sockets as Ron's T7-5 uses, the American RCAs from that era did not according to what Ed Holland found in his RCA 110K2, so I had to work out a technique, no cutting and J hooking involved.
Regards
Arran
Messages In This Thread
RE: Ron's RCA T7-5 Electronic Rescue - by Arran - 06-10-2018, 12:06 AM
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
Philco 42-345 Restoration/Repair
|
Hi OSanders,
Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM |
5U4 vs 5Z4 tubes
|
I think that RCA and GE introduced metal tubes in the USA in 1936. I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM |
Philco 42-345 Restoration/Repair
|
Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
5U4 vs 5Z4 tubes
|
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM |
Philco 42-345 Restoration/Repair
|
Thanks Rod,
"When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM |
Philco 42-345 Restoration/Repair
|
RodB
:beerchug:Vlad95 — 10:22 AM |
Philco 42-345 Restoration/Repair
|
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM |
5U4 vs 5Z4 tubes
|
Well this is a Hallicrafters SX/9 circa 1936.
No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM |
5U4 vs 5Z4 tubes
|
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM |
Philco 42-345 Restoration/Repair
|
By the way.
osanders0311
Take a look here: Dial cord stringing Guides
May be here you can fount correct string settin...Vlad95 — 11:15 PM |
Who's Online
|
There are currently no members online. |
|

|